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Oxygen Sensors Based on the Electrical Conductivity of the Solid Solutions (Mg 1–x Fe x )O and(Mg 1–x Co x )O
Author(s) -
VALVERDE NILO
Publication year - 1985
Publication title -
journal of the american ceramic society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.9
H-Index - 196
eISSN - 1551-2916
pISSN - 0002-7820
DOI - 10.1111/j.1151-2916.1985.tb10120.x
Subject(s) - solid solution , electrical resistivity and conductivity , oxygen , conductivity , analytical chemistry (journal) , oxygen pressure , partial pressure , materials science , oxygen sensor , chemistry , mineralogy , metallurgy , electrical engineering , chromatography , organic chemistry , engineering
Solid solutions of general compositions (Mg 1‐ x Fe x )O and (Mg 1‐x Co x )O (0.05 ≤ x ≤ 0.25) were investigated with regard to the dependence of their specific electrical conductivity on the oxygen partial pressure (10 −17 ≤ po 2 ≤ 10 5 Pa) at 900 c and 800°C. The experimental results, especially the slopes of plots of log σ vs log po 2 and the stability of the solid solutions studied, indicate that some of these compositions could be used as oxygen sensors at high temperatures.